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114 AMD Geode™ SC1200/SC1201 Processor Data Book
SuperI/O Module
32579B
Table 5-21. Divider Chain Control / Test Selection
DV2 DV1 DV0
ConfigurationCRA6 CRA5 CRA4
0 0 X Oscillator Disabled
0 1 0 Normal Operation
011Test
10X
1 1 X Divider Chain Reset
Table 5-22. Periodic Interrupt Rate Encoding
Rate Select
3 2 1 0
Periodic Interrupt
Rate (msec)
Divider
Chain Output
0 0 0 0 No interrupts
0 0 0 1 3.906250 7
0 0 1 0 7.812500 8
0 0 1 1 0.122070 2
0 1 0 0 0.244141 3
0 1 0 1 0.488281 4
0 1 1 0 0.976562 5
0 1 1 1 1.953125 6
1 0 0 0 3.906250 7
1 0 0 1 7.812500 8
1 0 1 0 15.625000 9
1 0 1 1 31.250000 10
1 1 0 0 62.500000 11
1 1 0 1 125.000000 12
1 1 1 0 250.000000 13
1 1 1 1 500.000000 14
Table 5-23. BCD and Binary Formats
Parameter BCD Format Binary Format
Seconds 00 to 59 00 to 3B
Minutes 00 to 59 00 to 3B
Hours 12-hour mode: 01 to 12 (AM)
81 to 92 (PM)
24-hour mode: 00 to 23
12-hour mode: 01 to 0C (AM)
81 to 8C (PM)
24-hour mode: 00 to 17
Day 01 to 07 (Sunday = 01) 01 to 07
Date 01 to 31 01 to 1F
Month 01 to 12 (January = 01) 01 to 0C
Year 00 to 99 00 to 63
Century 00 to 99 00 to 63